Method for controlling electrical power in a microgrid and arrangement comprising distributed generators

A distributed method is provided for controlling electrical power in a microgrid, wherein a plurality of distributed generators supply electrical power to the microgrid, and each of the distributed generators is connected to a controller for controlling the real and reactive output power from the distributed generator. The method includes the steps of measuring, for each of the distributed generators, a voltage level at a measuring point associated with that distributed generator and forwarding the measured voltage level to the controller connected to that distributed generator; determining, for each of the controllers, a parameter value related to the received measured voltage level and/or related to a reactive current injection capacity of the distributed generator connected to that controller; communicating, from each of the controllers, its determined parameter value to each other ones of the controllers; determining a sequential order in which the controllers are to control the distributed generators to inject reactive power into the microgrid based on the communicated parameter values; and controlling the distributed generators to inject reactive power into the microgrid by means of the controllers in the determined sequential order.